Création du certificat

openssl req -x509 -new -newkey rsa:4096 -sha256 -days 1000 -nodes -out freenode.pem -keyout freenode.pem

Obtention de l’empreinte :

openssl x509 -in freenode.pem -outform der | sha1sum -b | cut -d' ' -f1

Configurer Weechat

/set irc.server.freenode.ssl_cert <chemin>
/save

Ajouter le certificat via NickServ

/msg NickServ CERT ADD <empreinte>